Semi-classical dynamics of nano-electromechanical systems
Mesoscale and Nanoscale Physics
2010-10-15 v1
Abstract
We investigate the dynamics of a single phonon (oscillator) mode linearly coupled to an electronic few-level system in contact with external particle reservoirs (leads). A stationary electronic current through the system generates non-trivial dynamical behaviour of the oscillator. Using Feynman-Vernon influence functional theory, we derive a Langevin equation for the oscillator trajectory that is non-perturbative in the system-leads coupling and from which we extract effective oscillator potentials and friction coefficients. For the two simplest cases of a single and two coupled electronic levels, we discuss various regimes of the oscillator dynamics.
Cite
@article{arxiv.1006.2076,
title = {Semi-classical dynamics of nano-electromechanical systems},
author = {R. Hussein and A. Metelmann and P. Zedler and T. Brandes},
journal= {arXiv preprint arXiv:1006.2076},
year = {2010}
}
Comments
14 pages, 4 figures